feat(backend): agentflare-backend CRUD/webhooks/MCP tools + agentflare-db-kit

.gitignore

@@ -2,6 +2,13 @@
 /docs/superpowers/
 /.worktrees/
 
+# opencode CLI's own local state (node_modules, package.json/lock, plans dir)
+/.opencode/
+
+# Per-repo agentflare-backend project link (Vercel-style .vercel/project.json
+# equivalent) — machine-local, not something to share via git.
+/.agentflare/
+
 # Local onpush doc-generation tooling (machine-specific, not part of the project)
 /.onpush/
 /onpush_run.log

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
-members = ["crates/ponytail", "crates/agent-registry", "crates/skill-registry", "crates/gateway-registry", "crates/caveman", "crates/agentflare-artifacts"]
+members = ["crates/ponytail", "crates/agent-registry", "crates/skill-registry", "crates/gateway-registry", "crates/caveman", "crates/agentflare-artifacts", "crates/agentflare-backend", "crates/agentflare-db-kit"]
 resolver = "2"
 
 [package]
@@ -66,6 +66,8 @@ caveman = { package = "agentflare-caveman", path = "crates/caveman" }
 regex = "1"
 sysinfo = { version = "0.34", optional = true, default-features = false, features = ["system"] }
 agentflare-artifacts = { path = "crates/agentflare-artifacts" }
+agentflare-backend = { package = "agentflare-backend", path = "crates/agentflare-backend" }
+db_kit = { package = "agentflare-db-kit", path = "crates/agentflare-db-kit" }
 agent-detector = "0.2.1"
 
 [features]

crates/agentflare-backend/CHANGELOG.md

@@ -0,0 +1,16 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+
+- Initial crate scaffold with 8-table schema (workspaces, projects, states, items, labels, webhooks, assets, project_sequences) + 3 junction tables (item_labels, item_assignees, item_dependencies)
+- CRUD for all entities with soft-delete, partial unique indexes, UUIDv7 primary keys
+- State machine with 6 fixed groups + custom names, seeded on project creation
+- Per-project auto-increment sequence IDs
+- Error type with NotFound, Duplicate, InvalidTransition variants

crates/agentflare-backend/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "agentflare-backend"
+version = "0.1.0"
+edition = "2024"
+rust-version = "1.91"
+license = "MIT"
+description = "Universal agent backend: workspace/project/item schema + CRUD, ported from Plane's domain model."
+publish = false
+
+[dependencies]
+rusqlite = { version = "0.40", features = ["bundled"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+uuid = { version = "1", features = ["v4", "v7"] }
+thiserror = "2"
+ureq = { version = "2", features = ["json"] }
+sha2 = "0.10"
+hmac = "0.12"
+hex = "0.4"
+url = "2"
+
+[dev-dependencies]
+tempfile = "3"